The most reliable source of DIDs is a Tier 1 carrier that
delivers them
to you via PRI. XO provides a product called the MultiMarket
PRI where
you can chose US DIDs from all over the country.
Agreed, on the reliability part. There is no comparison. This is the
model we use for those cases where quality and reliability (not price)
are of primary concern. In our experience, that's most of the time,
whether the customer realizes it or not.
I'm interested in whether or not you are actually using that XO product
or not. When we explored it with them (after taking a week to find a
sales person who even knew what it was...) the pricing really didn't
make sense unless you were ready to make a significant push into a given
market. In other words, the economics weren't feasible if you only
needed a handful of DID's a that market. It also didn't scale especially
well, since it's an all-TDM solution. Has this changed?
We do use the XO product within LATA 460 (its cheaper for a single
LATA). That means we get to order DIDs from up to 5 different rate
centers in that LATA. I agree that if you are just looking for a
handful of DIDs then this is not for you. In our case we order
thousands of DIDs from XO within the LATA. Furthermore it takes weeks
to get the DIDs. There is no nifty web page were you can get them
instantly. If you need more details on it you can contact me off-list.
--
Andres
Technical Support
http://www.telesip.net
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